1.
The echinoid Holaster laevis from the Albian (Lower Cretaceous) of the Winterswijk area, eastern Netherlands
2.
Geo (Im) pulse A subrosion pipe fill in the Lower Muschelkalk, Winterswijk Quarry, Eastern Netherlands
3.
New geological data (Middle Triassic, Rhaetian-Liassic and Oligocene) of the Winterswijk quarry, the eastern Netherlands.
New geological data (Middle Triassic, Rhaetian-Liassic and Oligocene) of the Winterswijk quarry, the eastern Netherlands